CN107052052B - Multi-model full duration board rolling Strip Shape Control working roll and design method - Google Patents
Multi-model full duration board rolling Strip Shape Control working roll and design method Download PDFInfo
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- CN107052052B CN107052052B CN201710357250.4A CN201710357250A CN107052052B CN 107052052 B CN107052052 B CN 107052052B CN 201710357250 A CN201710357250 A CN 201710357250A CN 107052052 B CN107052052 B CN 107052052B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
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Abstract
The present invention relates to mechanical press technical fields, provide a kind of multi-model full duration board rolling Strip Shape Control working roll and design method, the Strip Shape Control working roll that section, wear control section and structure process section are adjusted including specific convexity is designed with datum width, initial roll shifting position and the shifting strategy of different plate widths are provided for the milling train of new generation with hydraulic working roll roll shifting system, realizes that a set of shape of working roll adapts to the multiple ability for having both inhomogeneous deformation side drop, Crown control and uneven wear control of a variety of mill type full duration board rollings；The present invention is new reasonable, has a extensive future.
Description
Technical field
The present invention relates to mechanical press technical field, in particular to a kind of multi-model full duration board rolling Strip Shape Control work
Make roller and design method.
Background technique
Currently, wide steel strip hot continuous mill production practices both at home and abroad be widely used the external CVC, K-WRS developed,
The plurality of plate-shape control method of the mainstream models such as SmartCrown.
K-WRS shape of working roll one end is taper (taper), upper working rolls and lower working rolls antisymmetry arrangement, according to the width of strip
The position of working roll play is adjusted, to reduce strip convexity, reduce edge abrasion, achievees the purpose that control abrasion.Though K-WRS
So there is wear control ability, but do not have inhomogeneous deformation Crown control ability, be suitable for continuous hot-rolling mill downstream rack.
CVC, SmartCrown milling train have strong Crown control ability and certain edge drop control capability, but are a lack of mill
Control ability is damaged, the lesser hot continuous rolling upstream stand of abrasion and tandem mills are primarily adapted for use in.
Summary of the invention
The object of the invention is to overcome the deficiencies of the prior art and provide a kind of multi-model full duration board rolling plate shape
Control working roll and design method.
The present invention is using asymmetric self compensation working roll, the asymmetric asymmetric self compensation technology of self compensation working roll
The abrasion for changing working roll using roller shape and the asymmetry of roll shifting improves the asymmetry of roll gap.Its basic principle is
It according to the wear law of working roll in the operation of rolling, is configured, is cooperated specific by special asymmetric self compensation shape of working roll
Shifting strategy, make the wear form of working roll from U-typed abrasion become " L " type abrasion, open box abrasion a side, make
Rolled piece is in the flat region of roller shape always and rolls, and is provided simultaneously with convexity, side drop and wears weight control ability.It is invented in authorization
Patent " working roll and application method of consideration to strip steel convexity, Edge Drop Control and wear control " puts into China and adds up electrician's output of steel
On the basis of maximum one meter of seven continuous hot-rolling mill, in conjunction with the production practical independent development asymmetric self compensation N series of tasks roller of wide cut
And hydraulic roll shifting and roller comprehensive strategic, breach the limitation of the extreme rolling condition of wide cut non-orientation silicon steel.It is higher in order to pursue
Dimensional accuracy, asymmetric self compensation working roll designs different roller shapes generally according to plate width, with production flexibility, low
It consumes efficient demand increasingly to increase, plate width specification is more diversified, is badly in need of proposing a kind of adapting to all plate widths
Asymmetric self compensation working roll.
Based on problem above, the present invention is based on the design principle of asymmetric self compensation Working roll technique as shown in Figure 1, analysis
Influences of the different plate widths to worn roll shape are combined by changing initial roll shifting position and shifting strategy according to wear law
The asymmetric roller shape of design solves the problems, such as that different plate widths need to be equipped with more set roller shapes.
The specific technical proposal of the invention is: a kind of multi-model full duration board rolling Strip Shape Control working roll, including according to
The convexity of secondary connection adjusts section, wear control section and structure process section；
The convexity adjusts the length L of section1Are as follows:Wherein LwFor working roll length, BOOn the basis of
Plate width, the benchmark plate width are maximum plate width, SSOFor the initial roll shifting position of benchmark strip, unit is
mm；The convexity adjusts the roll shape curve of section are as follows: y=-0.12 × sin (x π/Lw), wherein 0 < x < L1；
The length L of the wear control section2Are as follows: L2=Seo-Sso, wherein SeOWork when to roll last block datum plate band
Make roller roll shifting position, unit is mm；The roll shape curve of the wear control section are as follows: y=a2(x-L1)2+a4(x-L1)4+a6(x-
L1)6, wherein L1<x<L1+L2；a2、a4、a6For compensated curve characteristic coefficient.
Further, the length L of the structure process section3Are as follows: L3=Lw-L1-L2, the roll shape curve of the structure process section
Are as follows: y=b0+b1(x-L1-L2), L1+L2<x<Lw；
Wherein: b0=a2L2 2+a4L4 2+a6L6 2；
b1=2a2L2+4a4L3 2+6a6L5 2；
b0For roller shape continuity cooperation index, the i.e. end-on value of wear control section curve；b1Exist for wear control section curve
Slope at endpoint.
Further, the parameter a in the roll shape curve of the wear control section2、a4、a6To pass through multiple wear control points
It is obtained by fitting of a polynomial.
The present invention also provides a kind of design methods of multi-model full duration board rolling Strip Shape Control working roll, including such as
Lower step:
Step 1 determines plate width range: maximum width strip is benchmark strip, and the benchmark plate width is BO；
Step 2 determines shifting strategy: the shifting strategy includes roll shifting rhythm and roll shifting step-length,
Wherein, roll shifting rhythm is R:R=1；
Roll shifting step-length is t:
SeoWorking roll roll shifting position when to roll last block datum width strip, unit mm；
Step 3, the roller shape that the working roll is designed according to benchmark plate width: the working roll includes that convexity adjusts section,
Wear control section and structure process section；The roller shape of the working roll includes that convexity adjusts section, wear control section, structure process section
Length and roll shape curve；
The convexity adjusts the length L of section1Are as follows:Wherein LwFor working roll length, BOOn the basis of
Plate width, the benchmark plate width are maximum plate width, SSOFor the initial roll shifting position of benchmark strip, unit is
mm；The convexity adjusts the roll shape curve of section are as follows: y=-0.12 × sin (x π/Lw), wherein 0 < x < L1；
The length L of the wear control section2Are as follows: L2=Seo-Sso, wherein SeOWork when to roll last block datum plate band
Make roller roll shifting position, unit is mm；The roll shape curve of the wear control section are as follows: y=a2(x-L1)2+a4(x-L1)4+a6(x-
L1)6, wherein L1<x<L1+L2；a2、a4、a6For compensated curve characteristic coefficient.
The length L of the structure process section3Are as follows: L3=Lw-L1-L2, the roll shape curve of the structure process section are as follows: y=b0+
b1(x-L1-L2), L1+L2<x<Lw；
Wherein: b0=a2L2 2+a4L4 2+a6L6 2；
b1=2a2L2+4a4L3 2+6a6L5 2；
b0For roller shape continuity cooperation index, the i.e. end-on value of wear control section curve；b1Exist for wear control section curve
Slope at endpoint.
The invention has the benefit that it is wide to provide different strips for the milling train of new generation with hydraulic working roll roll shifting system
Then the initial roll shifting position of degree and shifting strategy include that specific convexity adjusts section, wear control section with datum width design
With the Strip Shape Control working roll of structure process section, realize that a set of shape of working roll adapts to a variety of mill type full duration board rollings
Have both inhomogeneous deformation side drop, Crown control and uneven wear control multiple ability；Its camber adjusts section L1 and is used for
Control strip crown, wear control section L2 are used to offset working roller abrasion, structure process section L3 is used to guarantee the letter of whole roller shape
Single easily mill, to improve the precision of grinding roller；Novel in structural design, rationally, have a extensive future.
Detailed description of the invention
Fig. 1 show asymmetric self compensation working roll work simplification illustraton of model, and (arrow direction in working roll is working roll
Roll shifting direction).
Fig. 2 show different plate widths to the influence curve figure of roll wear.
Fig. 3 show the schematic diagram of asymmetric self compensation shape of working roll curve.
Fig. 4 is closed position when showing rolling starting between asymmetric self compensation working roll (lower roll) and support roller and strip
It is schematic diagram.
Fig. 5 show asymmetric self compensation shape of working roll wear control section wear-compensating schematic diagram.
Fig. 6 show asymmetric self compensation shape of working roll wear control section thermal compensation schematic diagram.
Fig. 7 show asymmetric self compensation working roll-C roll shape curve.
Wherein: 1- working roller abrasion roller shape, 2- working roll ground conth, 3- rolling centerline.
Specific embodiment
Below in conjunction with specific attached drawing the present invention is described in detail specific embodiment.It should be noted that in following embodiments
The combination of the technical characteristic or technical characteristic of description is not construed as isolated, they can be combined with each other to reaching
To superior technique effect.In the drawings of the following embodiments, the identical label that each attached drawing occurs represent identical feature or
Person's component, can be apply to different embodiments.
The design method of the embodiment of the present invention the following steps are included:
The determination of step 1, shifting strategy
Working roller abrasion roller shape when influence such as Fig. 2 from different in width to worn roll shape can be seen that different plate widths
Form it is identical, the width of worn roll shape increases with the increase of plate width, therefore can be according to different plate widths
Different initial roll shifting positions (roll shifting position when first piece of strip of rolling) is set, is first chosen to be maximum plate width
Benchmark plate width B0.(working roll when first piece of datum width strip of rolling is altered for the initial roll shifting position of benchmark plate width
Roller position):
Sso=Ss
The roll shifting position of other width strips is
The endpoint of the side of first piece of strip and asymmetric self compensation working roll conical section when making to roll different in width strip
It is overlapped.
Then according to unit amount of rolling, in conjunction with factors such as roll shifting stroke length, suitable shifting strategy is formulated so that difference
Width strip can make full use of roll shifting stroke.Shifting strategy is broadly divided into roll shifting rhythm and roll shifting step-length, according to the above analysis
Different plate widths use same shifting strategy.Unit amount of rolling can indicate first are as follows:
Wherein SsoWorking roll roll shifting position when to roll last block datum width strip, mm；R is roll shifting rhythm, and t is to alter
Roller step-length, mm.Generally, roll shifting rhythm takes R=1, i.e. one piece of strip of every rolling, and play is primary, then roll shifting step-length are as follows:
What it is further according to datum width design includes that specific convexity adjusts section, wear control section and structure process section such as Fig. 3
Shown in shape of working roll:
Wherein S is working roll roll shifting position.
Step 2, the roller shape that the working roll is designed according to benchmark plate width
Step 2.1, convexity adjust section L1
1. the determination of convexity adjusting segment length
According to the design principle of asymmetric self compensation working roll, to guarantee to make full use of the maximum of milling train during the rolling process
Roll shifting stroke, the setting principle of taper segment length are the start-up portion and plate for guaranteeing asymmetric self compensation shape of working roll conical section
Band edge is aligned, and relative position when originating between asymmetric self compensation working roll, support roller and strip is rolled according to Fig. 4 and is closed
System, can obtain:
In formula, B is strip width, mm；LWFor working roll length, mm；LBURFor support roller length, mm；SsoFor at the beginning of working roll
Beginning beat position, mm；La、LbFor calculating parameter, mm.
The length that the convexity adjusts section is L1
Wherein LwFor working roll length, mm
2. the convexity adjusts the determination of the roll shape curve of section:
Y=-0.12 × sin (x π/Lw)(0<x<L1)
And the asymmetric self compensation working roll roller curve segment length can be calculated by Fig. 2 simultaneously are as follows:
Generally for the effect L that can play roll shifting to greatest extenteIt is maximized.
Step 2.2, wear control section L2
1. wear control section L2The determination of length:
Due to the feature of asymmetric self compensation working roll, its axial irreversible shifting strategy of one direction cooperates special work
Roller roller shape makes entire rolling cycle strip remain at flat region rolling, therefore the length of wear control section is by milling train
Maximum roll shifting stroke determine:
L2=Seo-Sso
2. wear control section L2The determination of roll shape curve:
Asymmetric self compensation working roll roll L2Curved section main purpose is the abrasion offset in the operation of rolling, the operation of rolling
Middle working roller abrasion constantly aggravates with the increase of amount of rolling, and thermal forming is once established and will be tended towards stability, so asymmetric
The design of the new roller shape wear control section curve of self compensation working roll will fully consider different rolling sequence working roller abrasions and hot-rolling
The influence of shape.It is according to design wear control section L with the worn roll shape of datum width strip according to above-mentioned analysis2Roll shape curve.
When designing asymmetric self compensation working roller abrasion control section curve, often rolls n/10 block strip and determine a wear control point, i.e.,
Draft datum width board rolling unit be n block strip, determined by the coordinate of 11 wear control points one it is asymmetric from
Compensation work roller wear control section curve.
In conjunction with live numerically control grinder actual conditions, L is described using multinomial herein2Section roll shape curve.
Y=a2(x-L1)2+a4(x-L1)4+a6(x-L1)6(L1<x<L1+L2)
Wherein a2、a4、a6It is obtained by following wear control point by fitting of a polynomial for compensated curve characteristic coefficient
a2、a4、a6Value.
Step 2.3, structure process section L3
Structure process section L3Actual control action is not played during the rolling process, and original design intention is to try to reduce roll
Stock removal, guarantee the simple easy mill of whole roller shape, to improve the precision of grinding roller
The length of the structure process section is L3:
The stick curve of the structure process section are as follows:
Y=b0+b1(x-L1-L2)(L1+L2<x<Lw)
b0=a2L2 2+a4L4 2+a6L6 2
b1=2a2L2+4a4L3 2+6a6L5 2
In formula, b0For roller shape continuity cooperation index, the i.e. end-on value of wear control section curve；b1For wear control section
Slope of the curve at endpoint.
Embodiment
It is 980mm~1280mm with certain 1700 free regulation mill milling plate width range, roll shifting stroke is -150~
It is explained detailedly for 150mm.
Step 1, shifting strategy
Influence of the different plate widths to worn roll shape is as shown in fig. 2, it can be seen that working roll is ground when different plate widths
The form for damaging roller shape is identical, and the width of worn roll shape increases with the increase of plate width, therefore can be according to different plates
Bandwidth sets different initial roll shifting positions (roll shifting position when first piece of strip of rolling), certain 1700 free regulation milling train rolls
Making sheet bandwidth range is 980mm~1280mm, and roll shifting stroke is that maximum plate width is chosen to be by -150~150mm first
Benchmark plate width, that is, B0=1280mm.The initial roll shifting position of benchmark plate width is (when first piece of datum width strip of rolling
Working roll roll shifting position):
Sso=Ss=-150
The roll shifting position of other width strips is
The initial roll shifting amount of different in width strip is as shown in table 1.
The initial roll shifting position of working roll when table 1 rolls different in width strip
In conjunction with the actual conditions of 1700 continuous hot-rolling mills, to make all width strips that can meet production requirement, design
1280mm strip unit amount of rolling is 200 pieces.Due to the particularity of asymmetric self compensation shape of working roll, unit amount of rolling by
Roll shifting stroke, shifting strategy decision can indicate are as follows:
Wherein SsoWorking roll roll shifting position when to roll last block datum width strip, mm；R is roll shifting rhythm, and t is to alter
Roller step-length, mm.Generally, roll shifting rhythm takes R=1 then roll shifting step-length are as follows:
It is 1.5mm/step by the roll shifting step-length that above formula calculates available 1280mm.Different strips as the above analysis
Width uses same shifting strategy.Unit amount of rolling 1180mm when can calculate different plate widths simultaneously is 166 pieces,
1080 be 133 pieces, and 980 be 100 pieces, is all satisfied production requirement.The following are be benchmark width design according to plate width 980mm
Asymmetric self compensation shape of working roll.
Step 2, the roller shape that the working roll is designed according to benchmark plate width
Step 2.1, convexity adjust section L1
1. the determination of convexity adjusting segment length
The length L of section is adjusted according to above-mentioned analysis convexity1Are as follows:
Wherein LwFor working roll length, mm
In conjunction with the actual conditions of 1700 continuous hot-rolling mills, working roll length is Lw=2000mm；Support roller length is LBUR=
1700mm.L can be calculated1=1670mm
2. the convexity adjusts the determination of the roll shape curve of section:
Y=-0.12 × sin (x π/Lw)(0<x<L1)
Step 2.2, wear control section L2
1. wear control section L2The determination of length:
The technical principle of asymmetric self compensation working roll is the roller shape by special designing, dexterously compensates roll wear
" box-shaped " wall is in rolled piece always in the roller shape more region of " flat ", and working roll strength roller is combined to guarantee roll gap shape
Shape it is normal and controllable.And the key component of " the roller shape of special designing ", i.e. the control serious work of continuous hot-rolling mill downstream rack
Roller abrasion and the conical section design of strip convexity are the most important parts in entire roll contour design system.
Due to the feature of asymmetric self compensation working roll, its axial irreversible shifting strategy of one direction cooperates special work
Roller roller shape makes entire rolling cycle strip remain at flat region rolling, therefore the length of wear control section is by milling train
Maximum roll shifting stroke determine.
L2=Seo-Sso
2. wear control section L2The determination of roll shape curve:
Asymmetric self compensation working roll roll L2Curved section main purpose is the abrasion offset in the operation of rolling, the operation of rolling
Middle working roller abrasion constantly aggravates with the increase of amount of rolling, and thermal forming is once established and will be tended towards stability, so asymmetric
The design of the new roller shape wear control section curve of self compensation working roll will fully consider different rolling sequence working roller abrasions and hot-rolling
The influence of shape.It is according to design wear control section L with the worn roll shape of datum width strip according to above-mentioned analysis2Roll shape curve.
When designing asymmetric self compensation working roller abrasion control section curve, often rolls n/10 block strip and determine a wear control point, i.e.,
Draft datum width board rolling unit be 150 pieces of strips, determined by the coordinate of 11 wear control points one it is asymmetric
Self compensation working roller abrasion control section curve.
It is in strip always in flat region in rolling, the compensation of asymmetric self compensation working roller abrasion control section
Amount should be strip to the heat expansion amount of the abrasion loss superposition working roll of working roll.Since the roll shifting mode of working roll is that one direction is uniform
Roll shifting, and the greatest wear amount of working roll is directly proportional to board rolling block number, so the wear-compensating curve of wear control section is
Curve, as shown in figure 5, wherein specify conical section starting point be coordinate origin, X-axis be away from roll conical section starting point away from
From Y-axis is work roll thermal bulk.In the design of the asymmetric new roller shape wear control section of self compensation working roll, it is necessary to consider work
The influence of roller thermal expansion can just fully open a side of box abrasion.It can be seen that working roll from working roll thermal forming more to lean on
Local roller temperature in the middle part of nearly strip is higher, and swell increment is bigger, when designing asymmetric self compensation working roller abrasion control section curve,
Working roll and the thermal expansion amount of strip edge contact position need to be compensated, offset is that thermal expansion amount and heat at origin are swollen at this
The difference of bulk, as shown in fig. 6, wherein specifying conical section starting point is coordinate origin, X-axis is away from roll conical section starting point
Distance, Y-axis are working roller abrasion compensation rate.
The new roller shape wear control section wear-compensating value of asymmetric self compensation working roll is added with thermal compensation value up to wearing
When the roll shape curve of roll occurs with polynomial form, live numerically control grinder cannot be properly arrived at odd term at control point
Set objective.The practical feelings of live numerically control grinder are combined on the basis of early-stage study and use asymmetric self compensation Working roll technique
Condition describes L using multinomial herein2Section roll shape curve.
Y=a2(x-L1)2+a4(x-L1)4+a6(x-L1)6(L1<x<L1+L2)
Wherein a2、a4、a6It is obtained by above-mentioned 11 wear controls point by fitting of a polynomial for compensated curve characteristic coefficient
To a2、a4、a6Value, as shown in table 2.
Partial Feature parameter/mm of the newly-designed asymmetric self compensation shape of working roll of table 2
Step 2.3, structure process section L3
Structure process section L3Actual control action is not played during the rolling process, and original design intention is to try to reduce roll
Stock removal, guarantee the simple easy mill of whole roller shape, to improve the precision of grinding roller.
The length of the structure process section is L3:
The stick curve of the structure process section are as follows:
Y=b0+b1(x-L1-L2)(L1+L2<x<Lw)
b0=a2L2 2+a4L4 2+a6L6 2
b1=2a2L2+4a4L3 2+6a6L5 2
In formula, b0For roller shape continuity cooperation index, the i.e. end-on value of wear control section curve；b1For wear control section
Slope of the curve at endpoint.
In wear control section L3Endpoint start to carry out one end of no practical control action in the way of tangent line it is flat
Sliding processing, on the one hand can guarantee the smooth of whole roll shape curve, enhance the control stability of wear control section；It on the other hand can
It is poor with the whole roller diameter for farthest reducing roller shape, guarantee that roller shape simply easily grinds, reduces roll dressing total amount, increasing roll makes
With the access times in the time limit.
According to above-mentioned design method and process, asymmetric self compensation shape of working roll Curve Design, newly-designed roller are completed
The asymmetric self compensation working roll C serial curve of shape is as shown in Figure 7.
The invention has the benefit that it is wide to provide different strips for the milling train of new generation with hydraulic working roll roll shifting system
Then the initial roll shifting position of degree and shifting strategy include that specific convexity adjusts section, wear control section with datum width design
With the Strip Shape Control working roll of structure process section, realize that a set of shape of working roll adapts to a variety of mill type full duration board rollings
Have both inhomogeneous deformation side drop, Crown control and uneven wear control multiple ability；Its camber adjusts section L1 and is used for
Control strip crown, wear control section L2 are used to offset working roller abrasion, structure process section L3 is used to guarantee the letter of whole roller shape
Single easily mill, to improve the precision of grinding roller；Novel in structural design, rationally, have a extensive future.
Although having been presented for several embodiments of the present invention herein, it will be appreciated by those of skill in the art that
Without departing from the spirit of the invention, the embodiments herein can be changed.Above-described embodiment is only exemplary, no
It should be using the embodiments herein as the restriction of interest field of the present invention.
Claims (3)
1. a kind of multi-model full duration board rolling Strip Shape Control working roll, which is characterized in that including sequentially connected convexity tune
Segment, wear control section and structure process section；
The convexity adjusts the length L of section1Are as follows:Wherein LwFor working roll length, BOIt is wide for benchmark strip
Degree, the benchmark plate width are maximum plate width, SSOFor the initial roll shifting position of benchmark strip, unit is mm；Institute
State the roll shape curve that convexity adjusts section are as follows: y=-0.12 × sin (x π/Lw), wherein 0 < x < L1；
The length L of the wear control section2Are as follows: L2=Seo-Sso, wherein SeOWorking roll is altered when to roll last block datum plate band
Roller position, unit are mm；The roll shape curve of the wear control section are as follows: y=a2(x-L1)2+a4(x-L1)4+a6(x-L1)6,
Middle L1<x<L1+L2；a2、a4、a6For compensated curve characteristic coefficient；
The length L of the structure process section3For L3=Lw-L1-L2The roll shape curve of the structure process section are as follows: y=b0+b1(x-
L1-L2), L1+L2<x<Lw；
Wherein: b0=a2L2 2+a4L4 2+a6L6 2；
b1=2a2L2+4a4L3 2+6a6L5 2；
b0For roller shape continuity cooperation index, the i.e. end-on value of wear control section curve；b1It is wear control section curve in endpoint
The slope at place.
2. working roll as described in claim 1, which is characterized in that the parameter a in the roll shape curve of the wear control section2、
a4、a6To be obtained by 11 wear control points by fitting of a polynomial.
3. a kind of design method of multi-model full duration strip free regulation rolling Strip Shape Control working roll, which is characterized in that packet
Include following steps:
Step 1 determines plate width range: maximum width strip is benchmark strip, and the benchmark plate width is BO；
Step 2 determines shifting strategy: the shifting strategy includes roll shifting rhythm and roll shifting step-length,
Wherein, roll shifting rhythm is R:R=1；
Roll shifting step-length is t:
SeoWorking roll roll shifting position when to roll last block datum width strip, unit mm；SeOForRoll last block benchmark
Working roll roll shifting position when strip；N is unit amount of rolling；
Step 3, the roller shape that the working roll is designed according to benchmark plate width: the working roll includes that convexity adjusts section, abrasion
Control section and structure process section；The roller shape of the working roll includes that convexity adjusts section, the length of wear control section, structure process section
And roll shape curve；
The convexity adjusts the length L1 of section are as follows:Wherein LwFor working roll length, BOIt is wide for benchmark strip
Degree, the benchmark plate width are maximum plate width, SSOFor the initial roll shifting position of benchmark strip, unit is mm；Institute
State the roll shape curve that convexity adjusts section are as follows: y=-0.12 × sin (x π/Lw), wherein 0 < x < L1；
The length L of the wear control section2Are as follows: L2=Seo-Sso, wherein SeOWorking roll is altered when to roll last block datum plate band
Roller position, unit are mm；The roll shape curve of the wear control section are as follows: y=a2(x-L1)2+a4(x-L1)4+a6(x-L1)6,
Middle L1<x<L1+L2；a2、a4、a6For compensated curve characteristic coefficient.
The length L of the structure process section3Are as follows: L3=Lw-L1-L2, the roll shape curve of the structure process section are as follows: y=b0+b1(x-
L1-L2), L1+L2<x<Lw；
Wherein: b0=a2L2 2+a4L4 2+a6L6 2；
b1=2a2L2+4a4L3 2+6a6L5 2；
b0For roller shape continuity cooperation index, the i.e. end-on value of wear control section curve；b1It is wear control section curve in endpoint
The slope at place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710357250.4A CN107052052B (en) | 2017-05-19 | 2017-05-19 | Multi-model full duration board rolling Strip Shape Control working roll and design method |
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| WO2019087284A1 (en) * | 2017-10-31 | 2019-05-09 | 東芝三菱電機産業システム株式会社 | Roll wear dispersion method for rolling stand and rolling system |
| CN112246880B (en) * | 2020-09-28 | 2022-03-18 | 武汉钢铁有限公司 | Twenty-high rolling mill strip shape optimization control method based on feedforward-middle shifting compensation |
| CN112588838B (en) * | 2020-11-10 | 2022-04-15 | 北京科技大学 | Asymmetric self-compensation rolling working roll suitable for short-stroke roll shifting and implementation method thereof |
| CN112906160B (en) * | 2021-03-04 | 2023-07-04 | 北京科技大学 | Calculation method for equivalent roll shape adjusting range of continuous variable convexity working roll and electronic equipment |
| CN113798330A (en) * | 2021-08-30 | 2021-12-17 | 北京科技大学 | Asynchronous roll shifting method with double attenuation of roll shifting stroke and roll shifting step length of working roll |
| CN114749490A (en) * | 2022-02-28 | 2022-07-15 | 首钢京唐钢铁联合有限责任公司 | Plate and strip rolling mill control method and related equipment |
| CN114700368B (en) * | 2022-03-07 | 2023-05-05 | 北京科技大学 | Work roll shape for eliminating local high points of plate and strip and design method |
| CN115121612B (en) * | 2022-05-30 | 2023-02-24 | 北京科技大学 | Asymmetric working roll shape based on endless rolling process and control method thereof |
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